Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

Cao, Hongyan; Li, Bin; Jiang, Xubao; Zhu, Xiaoli; Kong, Xiang Zheng

doi:10.1016/j.cej.2020.125867

Cited by 40 publications

(51 citation statements)

References 72 publications

(147 reference statements)

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“…Nevertheless, for the Fe 3+ system, the Poly(Ani-AMPS) has significant selectivity compared with the analogous Fe 2+ . Figure 5 b displays the two linear zones, where the first is from 20 μM to 80 μM, and the second region is from 100 μM to 400 μM [ 39 ]. Table S1 displays the values of fluorescence intensity concerning concentration for Fe 2+ and Fe 3+ .…”

Section: Resultsmentioning

confidence: 99%

Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

et al. 2021

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The development of anilinium 2-acrylamide-2-methyl-1-propanesulfonate (Ani-AMPS) monomer, confirmed by 1H NMR, 13C NMR, and FTIR, is systematically studied. Ani-AMPS contains two polymerizable functional groups, so it was submitted to selective polymerization either by free-radical or oxidative polymerization. Therefore, poly(anilinium 2-acrylamide-2-methyl-1-propanesulfonic) [Poly(Ani-AMPS)] and polyaniline doped with 2-acrylamide-2-methyl-1-propanesulfonic acid [PAni-AMPS] can be obtained. First, the acrylamide polymer, poly(Ani-AMPS), favored the π-stacking of the anilinium group produced by the inter- and intra-molecular interactions and was studied utilizing 1H NMR, 13C NMR, FTIR, and UV-Vis-NIR. Furthermore, poly(Ani-AMPS) fluorescence shows quenching in the presence of Fe2+ and Fe3+ in the emission spectrum at 347 nm. In contrast, the typical behavior of polyaniline is observed in the cyclic voltammetry analysis for PAni-AMPS. The optical properties also show a significant change at pH 4.4. The PAni-AMPS structure was corroborated through FTIR, while the thermal properties and morphology were analyzed utilizing TGA, DSC (except PAni-AMPS), and FESEM.

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Section: Resultsmentioning

confidence: 99%

Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

et al. 2021

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“…For that to occur, cationic α-poly- l -lysine (PLL) and oleate ion (OL) were chosen to build supramolecular films through the strategy of SPMSA, since amino acids are well-known chiral molecules and poly (amino acids) have been verified to display CTE 14 , 23 , 24 , 61 – 64 . In an aqueous solution, the ionic assembly between PLL and OL results in cross-linked vesicles, where PLL displays characteristic CTE but CPL silent.…”

Section: Introductionmentioning

confidence: 99%

Generating circularly polarized luminescence from clusterization‐triggered emission using solid phase molecular self-assembly

Liao

Zang

et al. 2021

Nat Commun

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Purely-organic clusterization‐triggered emission (CTE) has displayed promising abilities in bioimaging, chemical sensing, and multicolor luminescence. However, it remains absent in the field of circularly polarized luminescence (CPL) due to the difficulties in well-aligning the nonconventional luminogens. We report a case of CPL generated with CTE using the solid phase molecular self-assembly (SPMSA) of poly-L-lysine (PLL) and oleate ion (OL), that is, the macroscopic CPL supramolecular film self-assembled by the electrostatic complex of PLL/OL under mechanical pressure. Well-defined interface charge distribution, given by lamellar mesophases of OL ions, forces the PLL chains to fold regularly as a requirement of optimal electrostatic interactions. Further facilitated by hydrogen bonding, the through-space conjugation (TSC) of orderly aligned electron-rich O and N atoms leads to CTE-based CPL, which is capable of transferring energy to an acceptor via a Förster resonance energy transfer (FRET) process, making it possible to develop environmentally friendly and economic CPL from sustainable and renewable materials.

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“…1 TPUE exhibits notable performance among traditional thermosetting polymers, and thus, is deemed suitable to be used in various application areas, including automotive, aerospace, electronics, furniture industry, etc. [2][3][4] However, TPUE faces the intractable problems of recyclability and reusability because its molecular structure contains immensely stable urea bonds that cannot be decomposed even under highly basic and acidic conditions, high temperature, or the presence of special reagents. Therefore, there is a growing global concern for the resulting plastic pollution from stable polymers, which has motivated the development of recyclable and degradable thermosetting polymers to avoid waste and/or plastic accumulation in landlls and the environment.…”

Section: Introductionmentioning

confidence: 99%

Solving the difficult recyclability of conventional thermosetting polyurea elastomers based on commercial raw materials in a facile way

et al. 2022

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Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

Cited by 40 publications

References 72 publications

Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Generating circularly polarized luminescence from clusterization‐triggered emission using solid phase molecular self-assembly

Solving the difficult recyclability of conventional thermosetting polyurea elastomers based on commercial raw materials in a facile way

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